"I wove fine linen and silk so fair"

I'd like to know the provenance of this. Weavers were specialised as to what they wove - different threads (both for warp and weft) had very different characteristics, so much that they were dealt with in different areas - cotton in Lancashire, wool in Yorkshire, silk in Derby and Macclesfield (and a few other places), linen in many odd places, big in Ireland and parts of Scotland but very small scale elsewhere.

Anderstown may or may not be Andersonstown in Belfast (NI), but I'm not sure if silk was ever woven there after the 98.